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KHMS1850SSS2 KitchenAid Microwave - Instructions

All installation instructions for KHMS1850SSS2 parts

These instructions have been submitted by other PartSelect customers and can help guide you through the microwave repair with useful information like difficulty of repair, length of repair, tools needed, and more.

Glass microwave turntable shattered while taken out for a cleaning.

PartSelect had the turntable I needed at the best price. Ordering was easy, but best of all, the part was delivered next day. I was able to insert the new turntable plate into the microwave and it was good as new.

Broken Microwave Tray

This is the second replacement tray we have in installed. The first one ( Not From Here ) we had for less than 5 months, we made a bag of popcorn, and about 5 minutes later we heard a crash, not knowing where the noise came from we dismissed it. The next day we opened the microwave a saw the plate had shattered. So we hope that this will not do the same thing.

Plastic part that held the screw in place broke...into many pieces

The repair was easy beyond my biggest imagination. It took longer to get the part of the box than it did to install it.Three scres and that was it! Less thatn 5 minutes to install.

I just find it questionable why so many of these vent covers have to be replaced.(I saw all of the reviews before I purchased the part. Sure seems like a lot of broken covers.) Why do they break so easily and why hasn't KitchenAide made them ar bit more durable.

Microwave made very loud noise while on. No heat.

Unless you have a very comfortable background with electronics and electricity, I don't necessarily recommend taking apart a microwave. If you are very handy and are going to be VERY cautious to follow the rules of discharging caps and testing voltages before moving forward, then go for it. That said, I took the microwave off and apart. Not knowing where to find the parts, I was fortunate that the installer put the instruction book for the microwave inside the front vent slot above the touchpad for reference. it details the location of every part and it tells you very clearly what each part you test should show specific to this microwave on your multimeter. Find this guide online if you don't have it. Turn on the microwave for 20 seconds with a glass of water to make sure it's not heating - that with the noise means it's eeither the magnetron, cap, or diode. Read the notes on this site for all of the basic things to look for with the magnetron, diode, and capacitor. Once comfortable with the guide, locations of those devices, and how to test, then take it down and apart. Unfortunately, I didn't do all those things in that order, and it only wasted a lot of time trying to find the parts. Once I found the parts and put all the screws and covers back for all the areas that didn't need to be accessed for the repair, testing went quickly. The diode was bad. Ordered a new one and had it in 3 days or so. That means your microwave will be apart and sitting somewhere for a little while until you get the part and have time to repair it. Putting the diode back isn't too bad. Reassemble the microwave and put it back up again. If i had to do it again, it would take me 20 to 30 minutes once the microwave was down and on a table. Also, I used some bricks with towels over them or you could use some sawhorses to keep the microwave elevated so you can plug it in and run it after installing the new component. Again, make sure you discharge the cap before touching anything again even if you didn't run it, but just plugged it in.

Humming sound, not heating.

I turn off the income electricity by shutting down the corresponding circuit breaker. Then, I removed the control panel from the microwave which gave me access to the capacitor and adjacent diode. After that i unscrewed the defective diode and replaced it with the new one and BINGO!

The vent grille brackets were broken.

It's a good thing that the repair/replacement is easy, because this is the 3rd time that I have had to replace the vent grill. They are very cheaply constructed and KitchenAid should be ashamed to put a product this inferior on the market. Both the microwave and stove are a constant source of problems and repairs. I was amzed at the quick service and delivery. The vent grill was ordered on Monday and arrived Wednesday. GREAT SERVICE! Kitchen Aide should take notice.

The 2 molded plastic holes that accept the bolts broke.

A Phillips screwdriver was all that was needed. A poor design by KitchenAid for only having (2) bolts holding this stainless steel vent grille in a plastic housing, oh well. Don't lean or pull against it to hard or it will most likely break again.